Audible alarm for automobiles



H. MORGAN.

AUDIBLE ALARM FOR AUTOMOBILES.

7 APPLICATION FILED NOV. 6, 1911.

1,332,267. Patented Mar. 2, 1920.

2 SHEETS-SHEET l- WITNESSES INVENTOR fi/ A1072)? H. MORGAN.

AUDIBLE ALARM FOR AUTOMOBILES.

APPLICATION FILED NOV. 6,1917.

1,332,267. Y Patented Mar. 2, 1920.

2 SHEETS-SHEET 2- jigs.

WlT/VE s VENTOR HIV/cyan fimwuba By NITED STA i ES PATENT OFFIC.

HOWARD MORGAN, 0F ATLANTIC CITY, NEW JERSEY, ASSIGNOR, BY MESNE ASSIGN-MENTS, TO MORGAN AUTO ALARM CORPORATION, A CORPORATION OF NEW YORK.

AUDIBLE ALARM FOB AUTOMOBILES.

Application filed November 6, 1917.

To all whom it may concern:

Be it known that I, HOWARD MORGAN, a citizen of the United States, and aresident of Atlantic City, in .the county of Atlantic and State of NewJersey, have invented a new and Improved Audible Alarm for Automobiles,of which the following is a full, clear, and exact description.

This invention relates to safety appliances or alarm devices forvehicles and has particular reference to such devices adapted for use onautomobiles provided with internal explosion engines.

Among the special objects of the invention is to provide an audiblealarm adapted to be set into operation automatically in connection withthe exhaust pipe when the engine is started or the machine is operatedby any one without authority, so that the fact that the machine is beingtampered with will be published immediately and hence the meddlersscheme will be immediately frustrated.

With the foregoing and other objects in view the invention consists inthe arrangement and combination of parts hereinafter described andclaimed, and while the invention is not restricted to the exact detailsof construction disclosed or suo' 'ested herein, still for the purposeof illustrating a practical embodiment thereof reference is had to theaccompanying drawings, in which like reference characters designate thesame parts in the several views, and in which Figure 1 is a plan view ofthe main portions of my improvement, but with the casing in section onthe broken line 11 of Fig. 2. a

Fig. 2 is a vertical longitudinal section on the line 22 of Fig. 1,parts being in elevation.

Fig. 3 is a vertical transverse section on the line 33 of Fig. 2; and

Fig. 4: is a plan View of the chassis of a standard type of automobilewith my improvement in connection therewith.

10 indicates the engine of an automobile, and 11 indicates the exhaustpipe leading therefrom. At any desired place along the pipe 11 isinterposed a casing 12 constituting with its contents my improvement andwhich will be described now in detail.

The casing may be made of any suitable material and secured in the frontend there- Specification of Letters Patent.

Patented Mar. 2, 1920.

Serial No. 200,538.

of at 13 is a portion of the exhaust pipe 11 communicating with a Y 14.One branch 14lof the Y lies in alinement with the pipe ll and hasconnected to its rear end at 15' a straightaway pipe 16 which projectsthrough the rear end of the casing at 17 and to which is fitted in anysuitable manner an extension 11 of the exhaust pipe.

The other branch 14* of the Y has connected to it in any suitable mannera tubular member 18 which maybe rectangular preferably in cross section,and which in the main lies close and parallel to the member 16 andprojects through the rear end of the casing at 19 where it may be fittedwith a short pipe 20 open to the atmosphere.

In the bottom of the tubular member '18 is formed a rectangular opening:21 and adjacent thereto thev opposite lower edge portions are. formedwith transversely alined bearings 22 for the accommodation of ahorizontal shaft 23 for free rotation in said bearings. This shaft 23carries three members as follows: first, a. fan wheel having a. hub 24and a series of blades 25 radiating therefrom. The blades are formedpreferably to substantially fill the interior of the tubular member 18,and the special form of said member above stated lends itselfimmediately to the better cooperation of the blades. See Fig. 3. Theaxis of the shaft 23 is substantially in the plane of the bottom of thetubular member but just in front of the opening 21, or directly in frontof the wheel, is an upwardly and rearwardly projecting bridge member 26constituting an upward deflection of that portion of the bottom of themember 18 between the wheel and the Y.

On one end of the shaft 23 is fixed a cam wheel 27 having one or moreperipheral cams or crests 27, and on the other, end of the shaft and onthe opposite side of the member 18 from the cam wheel is fixed a flywheel 28. These two wheels are preferably of the same weight and insurean easy reliable rotation of the shaft with the fan wheel.

In the Y 14: is a movable gate 29 shown as mounted upon a vertical axisat 30 located at the crotch of the Y. The gate is adapted to be swungaround its axis so as to obstruct either-branch of the Y. In Fig. 2 thegate is shown closing the side branch 14%, as is also the indication infull lines in Fig. 1, whereas in dotted lines in Fig. 1 the gate isshown across the direct exhaust lines so as to shunt the exhaust gasesthrough the branch 14% and tubular, member 18. Thus the exhaust gases,or the major portion of the same, are caused to act against the bladesof the fan wheel 25 causing the same to rotate rapidly. When, however,the gate remains in the normal full line position in Fig. 1 the exhaustgases pass through the straightaway pipe 16 without any eflect beingmade upon the alarm devices.

. Any suitable means may be provided to control the position of the gate29, but for this purpose I prefer a key controlled device includingalock 32 having a bolt 33 from which a link 34: extends to a crank 35con nected to the upper end of the axle 30 of the gate. The position ofthe bolt lock 33 obviously maybe controlled by a key inserted into theslot 36 through the bottom of the vehicle body 37. Hence the position ofthe bolt 33 determines the position ofthe gate and the action of theexhaust gases upon the alarm devices.

At any convenient place on or inthe casing 12 is located a gong 38 shownherein as secured within the casing at its top. A clapper 39 is pivotedat 40 on a bracket 41 at the rear end of the casing; One end oftheclapper cooperates in the usual manner with the gong under the force ofa spring 42, while its opposite end is acted upon in succession by thecam crests 27 against the force of said spring. Hence when the fan wheelis rotated by the blast through the exhaust pipe 11 and member 18 thecam shaped periphery of the cam wheel 27 will cause a violent ringing ofthe gong. This action will take place as soon as the engine is startedwhether the machine has yet been put in motion or not, and so themeddler will not only be surprised at the sound thus produced, but willbe deterred from his surreptitious program.

In addition to the rotary fan wheel and gong devices I provide also asort of whistle indicated at 43 and having a tubularconnection 4:4: withone side of the branch 14 of the Y or the adjacent portion of thetubular member 18 whereby a portion of theexhaust gases may be conveyedthrouglncausingthe sounding ofthe whistle simultaneously with theringing-bf the gong.

The device is very simple and cheap of construction and mode ofoperation and addsbut anegligible amount of weight to the machine.Obviously duringthe normal proper operation of the machine there is nosensible effect produced by the attachment, but when the lock isoperated as intended and the machine is left standing the resultproduced by the unauthorized starting of the engine orrunning ofthe carby anyone not advised of the safety appliance will be pronounced andimmediate.

I claim:

In an audible alarm for automobiles,.the combination with anexhaustpipe, an extensionleadin at an angle fromthe exhaust pipe and keycontrolled means to govern the flow of the exhaust gases either directlythrough the exhaust pipe or through said extension, of arotarymembercamiedbysaid extension and caused to rotate rapidly .by the exhaust Ygages when passing throughthe extensioina cam wheel causedto rotate fromsaid rotary member, a gong, and a pivoted member actuated by said ,camwheel and adapted to cause theringingofthe gong.

' HOWARD lMORGAN.

